Oral irrigator



FIG. 1 is a front isometric view of an oral irrigator.

FIG. 2 is a front elevation view thereof.

FIG. 3 is a rear elevation view thereof.

FIG. 4 is a left side elevation view thereof.

FIG. 5 is a right side elevation view thereof.

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines illustrate portions of the oral irrigator that form no part of the claimed design. 

CLAIM We claim the ornamental design for an oral irrigator, as shown and described. 